RTOS/TMDSEVM572X: Sending data from PRU to A15

Anjana Pathak0

Expert 2205 points

Part Number: TMDSEVM572X

Tool/software: TI-RTOS

Hi,

I am having GP EVM AM572x(processor_sdk_rtos_am57xx_3_02_00_05).

I want to send data from PRU to ARM a15 core in a application which is running on TI RToS.

Is there any lab available for TI_RTOS where the data communication between ARM and PRU is explained.

Thanks,

Anjana Pathak

over 6 years ago

0 Biser Gatchev-XID over 6 years ago

TI__Guru**** 393215 points

The RTOS team have been notified. They will respond here.

0 Sahin Okur over 6 years ago

TI__Mastermind 27355 points

Hi Anjana,

I believe you will want to look into IPC component. Please refer to the following links to help you get started.

processors.wiki.ti.com/.../IPC_Users_Guide

www.ti.com/.../sprugo6e.pdf

training.ti.com/intro-to-ipc-for-keystone-and-sitara

Let us know if you have any questions.

Best,
Sahin

0 Anjana Pathak0 over 6 years ago in reply to Sahin Okur

Expert 2205 points

Thanks for the information..
IPC is designed for use on processors running SYS/BIOS applications.
in my case Host ARM is running as sys/bios application and PRU is programmed as bare metal.
The PRU will read some data from its GPI and this data is to be shared to arm a15.
I am not able to understand how this can be achived..

0 Sahin Okur over 6 years ago in reply to Anjana Pathak0

TI__Mastermind 27355 points

Hi Anjana,

We don't have any bare-metal IPC examples, but you can use mailbox to notify/interrupt the PRU. You can refer to the PRU rpmsg communication mechanism used in Linux - processors.wiki.ti.com/.../PRU-ICSS_Remoteproc_and_RPMsg

Alternatively, you can place a single bit in memory and poll it to notify read and write operations.

Regards,
Sahin

0 Anjana Pathak0 over 6 years ago in reply to Sahin Okur

Expert 2205 points

But this mechanism is used in Linux. if i want to use it in TI RTOS is it possible to communicate...

0 Sahin Okur over 6 years ago in reply to Anjana Pathak0

TI__Mastermind 27355 points

Hi Anjana,

A similar question was posted here and may answer your question. Please take a look and let us know if you have any questions.

e2e.ti.com/.../2116987

Regards,
Sahin

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RTOS/TMDSEVM572X: Sending data from PRU to A15